There is talk about 50k salaries, which is in programmer salary territory.
https://www.theguardian.com/business/2021/sep/06/lorry-drive...
Or to put it another way, the market is working as markets do.
If people really want HGV drivers then they will have to offer more, and not just money but better working conditions and more secure employment.
It used to make sense for Eastern Europeans to seek a better career in the UK but a 3 months is not a career.